Total Assets
$486M
Total balance-sheet footings
FDIC Cert #4236 · Coalgate, Oklahoma · Est. 1924
Shamrock Bank, N.A. - FDIC Bank Health Profile
A community-scale look at Shamrock Bank, N.A.'s own numbers, pulled straight from its quarterly FDIC Call Report.
- $486M
- Total assets
- B
- Health grade · Good
- 1.33%
- Return on assets
- 9.8%
- Tier 1 capital
Data updated July 2026
The verdict
Shamrock Bank, N.A. earns a PlainBankData health grade of B (66/100), with 9.80% Tier 1 capital, profitable at 1.33% ROA, 65% efficiency ratio.
- #1,819
- largest of 4,313 FDIC banks by assets
- 58th
- percentile by asset size, nationally
- 9.80%
- Tier 1 ratio - below the 10% well-capitalized line
- 66th
- percentile for profitability (ROA), nationally
This grade is PlainBankData's own interpretation of the bank's Call Report, not an FDIC rating, deposits here stay federally insured to $250,000 per depositor, per category, regardless of grade.
How Shamrock Bank, N.A.'s 66/100 score adds up
Each factor is scored from this bank's own FDIC Call Report figures, then summed to the composite health score.
Shamrock Bank, N.A.'s composite health score
Tier 1 Capital Ratio (9.80%) 18/40
Return on Assets (ROA) (1.33%) 20/25
Texas Ratio (2.16%) 20/20
Efficiency Ratio (65.29%) 8/15
66 of 100 points earned across four weighted factors. See our methodology for the full scoring formula.
Balance sheet at a glance
Total Deposits
$442M
Customer-funded liabilities
Net Loans
$324M
Outstanding loan book
Net Income
$6M
Bottom-line earnings
Capital adequacy vs federal thresholds
Where Shamrock Bank, N.A. ranks
Every one of the 4,307 FDIC-insured banks with a computed health score, bucketed by score. Shamrock Bank, N.A.'s score of 66/100 falls in the highlighted band.
Shamrock Bank, N.A.'s size among FDIC-insured banks
Every one of the 4,307 FDIC-insured banks with reported assets, bucketed by total-asset scale (note the buckets are powers of 10, most banks cluster in the $100M-$1B range). Shamrock Bank, N.A.'s $486M falls in the highlighted band.
Safety metrics
Tier 1 capital ratio
Well-capitalized 10%
9.80% of risk-weighted assets - below the federal "well-capitalized" threshold of 10%.
Tier 1 Capital Ratio
9.80%
Texas Ratio
2.16%
Equity Capital
$39M
Profitability metrics
Return on Assets (ROA)
66th percentile nationally
1.33%
Return on Equity (ROE)
17.42%
Efficiency Ratio
65.29%
What the numbers say about Shamrock Bank, N.A.
Shamrock Bank, N.A. is an FDIC-insured institution (Certificate #4236) headquartered in Coalgate, Oklahoma, established in 1924. It holds $486M in total assets - 1,819th of 4,313 FDIC-insured banks, $442M in customer deposits, and $324M in net loans. Looking at capital strength, Tier 1 stands at 9.80%, under the 10% well-capitalized line regulators set, while the Texas Ratio comes in at 2.16%, comfortably below the 50% caution mark. It earns a PlainBankData health grade of B (66/100), a composite of Tier 1 capital, ROA, the Texas Ratio, and efficiency. All of it traces back to the bank's own quarterly FDIC Call Report filing.
Within Oklahoma, Shamrock Bank, N.A. ranks 51st of 172 FDIC-insured banks by asset size -- a mid-sized institution, neither among the state's largest nor its smallest.
Income & expense breakdown
$26M
Interest Income
$3M
Non-Interest Income
$13M
Non-Interest Expense
Asset quality, Texas Ratio detail
The Texas Ratio compares troubled assets to the capital available to absorb losses. Shamrock Bank, N.A. reports a Texas Ratio of 2.16% - comfortably in the healthy band; non-performing loans are a small fraction of the bank’s loss-absorbing capital.
Texas Ratio
Caution 50%
2.16% - lower is safer; 100% is the level at which troubled assets equal loss-absorbing capital.
Top banks in Oklahoma by total assets
Source: FDIC BankFind Suite, Call Report (FFIEC 031/041) Shamrock Bank, N.A. (FDIC Cert #4236) - Tier 1 capital ratio, total assets, deposits, ROA/ROE · 2025 FDIC Call Reports filed quarterly; latest publicly-available vintage shown. Health grades are PlainBankData's interpretation of regulatory filings and are not official FDIC ratings.
Other banks in Oklahoma
All Oklahoma banks →| Bank | Assets | Grade | ROA |
|---|---|---|---|
| BOKF, National AssociationTulsa | $52.0B | A | 1.10% |
| MidFirst BankOklahoma City | $41.4B | B | 1.19% |
| First United Bank and Trust CompanyDurant | $16.3B | B | 0.97% |
| BancFirstOklahoma City | $12.1B | A | 1.79% |
| InterBankOklahoma City | $5.5B | B | 3.60% |
| Stride Bank, National AssociationEnid | $4.9B | A | 2.10% |
| RCB BankClaremore | $4.1B | A | 1.32% |
| First Fidelity BankOklahoma City | $2.9B | B | 0.94% |
Frequently asked questions
What is Shamrock Bank, N.A.'s health grade?▼
Shamrock Bank, N.A. receives a health grade of B (66/100) based on four FDIC financial metrics: Tier 1 Capital Ratio (40%), Return on Assets (25%), Texas Ratio (20%), and Efficiency Ratio (15%). This bank shows good financial health with solid capital levels above regulatory minimums.
How large is Shamrock Bank, N.A.?▼
Shamrock Bank, N.A. holds $486M in total assets and $442M in deposits, ranking 1,819th of 4,313 FDIC-insured banks by asset size. It is headquartered in Coalgate, Oklahoma.
Is my money safe at Shamrock Bank, N.A.?▼
Yes, deposits at Shamrock Bank, N.A. (Certificate #4236) are FDIC-insured up to $250,000 per depositor, per ownership category, regardless of health grade.
What is Shamrock Bank, N.A.'s Tier 1 Capital Ratio?▼
Shamrock Bank, N.A. has a Tier 1 Capital Ratio of 9.80%. The federal "well-capitalized" threshold is 10%. This bank meets the minimum 6% "adequately capitalized" standard.
What is the Texas Ratio for Shamrock Bank, N.A.?▼
Shamrock Bank, N.A. has a Texas Ratio of 2.16%. A ratio below 50% is generally considered healthy. The Texas Ratio measures non-performing loans against equity and reserves, a higher ratio signals greater exposure to loan losses.
How efficient is Shamrock Bank, N.A.?▼
Shamrock Bank, N.A. has an Efficiency Ratio of 65.29%. Above 60% means a larger share of revenue goes to operating costs. This metric compares non-interest expenses to total revenue.
What to do with this
How to read Shamrock Bank, N.A.'s profile as a depositor or analyst.
- Shamrock Bank, N.A.'s grade reflects capital, profitability, and asset quality, read the four pillars before drawing conclusions. How grades work
- Compare Shamrock Bank, N.A. against other Oklahoma banks before moving funds. Oklahoma banks
Not financial advice. Health grades are PlainBankData's interpretation of public FDIC Call Report data, not official FDIC ratings or predictions. Verify the latest figures at the FDIC BankFind Suite.
Every figure on PlainBankData is rendered directly from FDIC federal source data, no number is typed in by an editor. Informational only, not professional advice; consult a qualified professional before acting on it. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Q4 2025.
Disclaimer: Data from the FDIC BankFind Suite. PlainBankData does not rate or rank banks as investment or safety recommendations. Health grades are informational only, computed from public regulatory filings. Always verify current standing directly with FDIC.gov before making financial decisions.